The remote server returned an error: (403) Forbidden with HttpWebRequest put method

Question

Hi all:

     I have a problem to upload file to the server form win form. I am using VS2005, the server is Windows 2003. In IIS I have assign everyone full permition to that virtual directoty and also anonymous access is enabled.  But I still get error as "The remote server returned an error: (403) Forbidden". However, I can download file from that directoy and I can access http://server1/webservice1/upload by IE My code is as following: Please help.

     HttpWebRequest req = (HttpWebRequest)WebRequest.Create "http://server1/webservice1/Service.asmx/upload");

            req.Method = "PUT";
            req.AllowWriteStreamBuffering = true;

            req.Credentials = CredentialCache.DefaultCredentials;
            //// Retrieve request stream
            Stream reqStream = req.GetRequestStream();
            // Open the local file
            FileStream rdr = new FileStream(DBConnection.DataSourceDirectoy, FileMode.Open);

            // Allocate byte buffer to hold file contents
            byte[] inData = new byte[4096];

            // loop through the local file reading each data block
            //  and writing to the request stream buffer
            int bytesRead = rdr.Read(inData, 0, inData.Length);
            while (bytesRead > 0)
            {
                reqStream.Write(inData, 0, bytesRead);
                bytesRead = rdr.Read(inData, 0, inData.Length);
            }

            rdr.Close();
            reqStream.Close();

            try
            {
                req.GetResponse();
            }
            catch (Exception x)
            {
                MessageBox.Show(x.Message);
            }

   Thanks

Answer 1

You have to grant both of these:

• write permission to the virtual directory in IIS (i.e. the permission for HTTP PUT). Without, you'll get a  HTTP 403 error.
• write permission for the IIS process identity (e.g. IUSR_<MACHINENAME>) on the actual directory on the file system. Without, you'll get a HTTP 401 error. 

Answer 2

Thanks for reply:

 

     I have done what you asked above, I assigned the full permissions to the virtual directory in IIS include “scrit source access, read, write, directory browing, log visits, index this resource” plus execute permissions with “Scripts and executables”. I also tried to use both IUSR_<MACHINENAME> and Administrator account under Directory security in IIS. However I still get the same 403 error.

 

   Another thing I feel strange, I can access this file upload directory in IE with http://server1/webservices1/upload , but in the WebRequest I need to use directory as http://server1/webservice1/Service.asmx/upload  , which is not accessible in IE. I am not sure if it has something to do with 403 error.

 

Thank

Answer 3

Sorry, I had missed the fact that you're trying to PUT to the path info of a Web Service endpoint. Which begs the question "why"? There's no defined binding for SOAP 1.x and HTTP PUT. You should POST instead.